| /* | |
| * INET An implementation of the TCP/IP protocol suite for the LINUX | |
| * operating system. INET is implemented using the BSD Socket | |
| * interface as the means of communication with the user level. | |
| * | |
| * Definitions for the Interfaces handler. | |
| * | |
| * Version: @(#)dev.h 1.0.10 08/12/93 | |
| * | |
| * Authors: Ross Biro | |
| * Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG> | |
| * Corey Minyard <wf-rch!minyard@relay.EU.net> | |
| * Donald J. Becker, <becker@cesdis.gsfc.nasa.gov> | |
| * Alan Cox, <alan@lxorguk.ukuu.org.uk> | |
| * Bjorn Ekwall. <bj0rn@blox.se> | |
| * Pekka Riikonen <priikone@poseidon.pspt.fi> | |
| * | |
| * This program is free software; you can redistribute it and/or | |
| * modify it under the terms of the GNU General Public License | |
| * as published by the Free Software Foundation; either version | |
| * 2 of the License, or (at your option) any later version. | |
| * | |
| * Moved to /usr/include/linux for NET3 | |
| */ | |
| #ifndef _LINUX_NETDEVICE_H | |
| #define _LINUX_NETDEVICE_H | |
| #include <linux/if.h> | |
| #include <linux/if_ether.h> | |
| #include <linux/if_packet.h> | |
| #ifdef __KERNEL__ | |
| #include <linux/timer.h> | |
| #include <linux/delay.h> | |
| #include <linux/mm.h> | |
| #include <asm/atomic.h> | |
| #include <asm/cache.h> | |
| #include <asm/byteorder.h> | |
| #include <linux/device.h> | |
| #include <linux/percpu.h> | |
| #include <linux/dmaengine.h> | |
| #include <linux/workqueue.h> | |
| #include <net/net_namespace.h> | |
| #include <net/dsa.h> | |
| #ifdef CONFIG_DCB | |
| #include <net/dcbnl.h> | |
| #endif | |
| struct vlan_group; | |
| struct ethtool_ops; | |
| struct netpoll_info; | |
| /* 802.11 specific */ | |
| struct wireless_dev; | |
| /* source back-compat hooks */ | |
| #define SET_ETHTOOL_OPS(netdev,ops) \ | |
| ( (netdev)->ethtool_ops = (ops) ) | |
| #define HAVE_ALLOC_NETDEV /* feature macro: alloc_xxxdev | |
| functions are available. */ | |
| #define HAVE_FREE_NETDEV /* free_netdev() */ | |
| #define HAVE_NETDEV_PRIV /* netdev_priv() */ | |
| #define NET_XMIT_SUCCESS 0 | |
| #define NET_XMIT_DROP 1 /* skb dropped */ | |
| #define NET_XMIT_CN 2 /* congestion notification */ | |
| #define NET_XMIT_POLICED 3 /* skb is shot by police */ | |
| #define NET_XMIT_MASK 0xFFFF /* qdisc flags in net/sch_generic.h */ | |
| /* Backlog congestion levels */ | |
| #define NET_RX_SUCCESS 0 /* keep 'em coming, baby */ | |
| #define NET_RX_DROP 1 /* packet dropped */ | |
| #define NET_RX_CN_LOW 2 /* storm alert, just in case */ | |
| #define NET_RX_CN_MOD 3 /* Storm on its way! */ | |
| #define NET_RX_CN_HIGH 4 /* The storm is here */ | |
| #define NET_RX_BAD 5 /* packet dropped due to kernel error */ | |
| /* NET_XMIT_CN is special. It does not guarantee that this packet is lost. It | |
| * indicates that the device will soon be dropping packets, or already drops | |
| * some packets of the same priority; prompting us to send less aggressively. */ | |
| #define net_xmit_eval(e) ((e) == NET_XMIT_CN? 0 : (e)) | |
| #define net_xmit_errno(e) ((e) != NET_XMIT_CN ? -ENOBUFS : 0) | |
| #endif | |
| #define MAX_ADDR_LEN 32 /* Largest hardware address length */ | |
| /* Driver transmit return codes */ | |
| #define NETDEV_TX_OK 0 /* driver took care of packet */ | |
| #define NETDEV_TX_BUSY 1 /* driver tx path was busy*/ | |
| #define NETDEV_TX_LOCKED -1 /* driver tx lock was already taken */ | |
| #ifdef __KERNEL__ | |
| /* | |
| * Compute the worst case header length according to the protocols | |
| * used. | |
| */ | |
| #if defined(CONFIG_WLAN_80211) || defined(CONFIG_AX25) || defined(CONFIG_AX25_MODULE) | |
| # if defined(CONFIG_MAC80211_MESH) | |
| # define LL_MAX_HEADER 128 | |
| # else | |
| # define LL_MAX_HEADER 96 | |
| # endif | |
| #elif defined(CONFIG_TR) | |
| # define LL_MAX_HEADER 48 | |
| #else | |
| # define LL_MAX_HEADER 32 | |
| #endif | |
| #if !defined(CONFIG_NET_IPIP) && !defined(CONFIG_NET_IPIP_MODULE) && \ | |
| !defined(CONFIG_NET_IPGRE) && !defined(CONFIG_NET_IPGRE_MODULE) && \ | |
| !defined(CONFIG_IPV6_SIT) && !defined(CONFIG_IPV6_SIT_MODULE) && \ | |
| !defined(CONFIG_IPV6_TUNNEL) && !defined(CONFIG_IPV6_TUNNEL_MODULE) | |
| #define MAX_HEADER LL_MAX_HEADER | |
| #else | |
| #define MAX_HEADER (LL_MAX_HEADER + 48) | |
| #endif | |
| #endif /* __KERNEL__ */ | |
| /* | |
| * Network device statistics. Akin to the 2.0 ether stats but | |
| * with byte counters. | |
| */ | |
| struct net_device_stats | |
| { | |
| unsigned long rx_packets; /* total packets received */ | |
| unsigned long tx_packets; /* total packets transmitted */ | |
| unsigned long rx_bytes; /* total bytes received */ | |
| unsigned long tx_bytes; /* total bytes transmitted */ | |
| unsigned long rx_errors; /* bad packets received */ | |
| unsigned long tx_errors; /* packet transmit problems */ | |
| unsigned long rx_dropped; /* no space in linux buffers */ | |
| unsigned long tx_dropped; /* no space available in linux */ | |
| unsigned long multicast; /* multicast packets received */ | |
| unsigned long collisions; | |
| /* detailed rx_errors: */ | |
| unsigned long rx_length_errors; | |
| unsigned long rx_over_errors; /* receiver ring buff overflow */ | |
| unsigned long rx_crc_errors; /* recved pkt with crc error */ | |
| unsigned long rx_frame_errors; /* recv'd frame alignment error */ | |
| unsigned long rx_fifo_errors; /* recv'r fifo overrun */ | |
| unsigned long rx_missed_errors; /* receiver missed packet */ | |
| /* detailed tx_errors */ | |
| unsigned long tx_aborted_errors; | |
| unsigned long tx_carrier_errors; | |
| unsigned long tx_fifo_errors; | |
| unsigned long tx_heartbeat_errors; | |
| unsigned long tx_window_errors; | |
| /* for cslip etc */ | |
| unsigned long rx_compressed; | |
| unsigned long tx_compressed; | |
| }; | |
| /* Media selection options. */ | |
| enum { | |
| IF_PORT_UNKNOWN = 0, | |
| IF_PORT_10BASE2, | |
| IF_PORT_10BASET, | |
| IF_PORT_AUI, | |
| IF_PORT_100BASET, | |
| IF_PORT_100BASETX, | |
| IF_PORT_100BASEFX | |
| }; | |
| #ifdef __KERNEL__ | |
| #include <linux/cache.h> | |
| #include <linux/skbuff.h> | |
| struct neighbour; | |
| struct neigh_parms; | |
| struct sk_buff; | |
| struct netif_rx_stats | |
| { | |
| unsigned total; | |
| unsigned dropped; | |
| unsigned time_squeeze; | |
| unsigned cpu_collision; | |
| }; | |
| DECLARE_PER_CPU(struct netif_rx_stats, netdev_rx_stat); | |
| struct dev_addr_list | |
| { | |
| struct dev_addr_list *next; | |
| u8 da_addr[MAX_ADDR_LEN]; | |
| u8 da_addrlen; | |
| u8 da_synced; | |
| int da_users; | |
| int da_gusers; | |
| }; | |
| /* | |
| * We tag multicasts with these structures. | |
| */ | |
| #define dev_mc_list dev_addr_list | |
| #define dmi_addr da_addr | |
| #define dmi_addrlen da_addrlen | |
| #define dmi_users da_users | |
| #define dmi_gusers da_gusers | |
| struct hh_cache | |
| { | |
| struct hh_cache *hh_next; /* Next entry */ | |
| atomic_t hh_refcnt; /* number of users */ | |
| /* | |
| * We want hh_output, hh_len, hh_lock and hh_data be a in a separate | |
| * cache line on SMP. | |
| * They are mostly read, but hh_refcnt may be changed quite frequently, | |
| * incurring cache line ping pongs. | |
| */ | |
| __be16 hh_type ____cacheline_aligned_in_smp; | |
| /* protocol identifier, f.e ETH_P_IP | |
| * NOTE: For VLANs, this will be the | |
| * encapuslated type. --BLG | |
| */ | |
| u16 hh_len; /* length of header */ | |
| int (*hh_output)(struct sk_buff *skb); | |
| seqlock_t hh_lock; | |
| /* cached hardware header; allow for machine alignment needs. */ | |
| #define HH_DATA_MOD 16 | |
| #define HH_DATA_OFF(__len) \ | |
| (HH_DATA_MOD - (((__len - 1) & (HH_DATA_MOD - 1)) + 1)) | |
| #define HH_DATA_ALIGN(__len) \ | |
| (((__len)+(HH_DATA_MOD-1))&~(HH_DATA_MOD - 1)) | |
| unsigned long hh_data[HH_DATA_ALIGN(LL_MAX_HEADER) / sizeof(long)]; | |
| }; | |
| /* Reserve HH_DATA_MOD byte aligned hard_header_len, but at least that much. | |
| * Alternative is: | |
| * dev->hard_header_len ? (dev->hard_header_len + | |
| * (HH_DATA_MOD - 1)) & ~(HH_DATA_MOD - 1) : 0 | |
| * | |
| * We could use other alignment values, but we must maintain the | |
| * relationship HH alignment <= LL alignment. | |
| * | |
| * LL_ALLOCATED_SPACE also takes into account the tailroom the device | |
| * may need. | |
| */ | |
| #define LL_RESERVED_SPACE(dev) \ | |
| ((((dev)->hard_header_len+(dev)->needed_headroom)&~(HH_DATA_MOD - 1)) + HH_DATA_MOD) | |
| #define LL_RESERVED_SPACE_EXTRA(dev,extra) \ | |
| ((((dev)->hard_header_len+(dev)->needed_headroom+(extra))&~(HH_DATA_MOD - 1)) + HH_DATA_MOD) | |
| #define LL_ALLOCATED_SPACE(dev) \ | |
| ((((dev)->hard_header_len+(dev)->needed_headroom+(dev)->needed_tailroom)&~(HH_DATA_MOD - 1)) + HH_DATA_MOD) | |
| struct header_ops { | |
| int (*create) (struct sk_buff *skb, struct net_device *dev, | |
| unsigned short type, const void *daddr, | |
| const void *saddr, unsigned len); | |
| int (*parse)(const struct sk_buff *skb, unsigned char *haddr); | |
| int (*rebuild)(struct sk_buff *skb); | |
| #define HAVE_HEADER_CACHE | |
| int (*cache)(const struct neighbour *neigh, struct hh_cache *hh); | |
| void (*cache_update)(struct hh_cache *hh, | |
| const struct net_device *dev, | |
| const unsigned char *haddr); | |
| }; | |
| /* These flag bits are private to the generic network queueing | |
| * layer, they may not be explicitly referenced by any other | |
| * code. | |
| */ | |
| enum netdev_state_t | |
| { | |
| __LINK_STATE_START, | |
| __LINK_STATE_PRESENT, | |
| __LINK_STATE_NOCARRIER, | |
| __LINK_STATE_LINKWATCH_PENDING, | |
| __LINK_STATE_DORMANT, | |
| }; | |
| /* | |
| * This structure holds at boot time configured netdevice settings. They | |
| * are then used in the device probing. | |
| */ | |
| struct netdev_boot_setup { | |
| char name[IFNAMSIZ]; | |
| struct ifmap map; | |
| }; | |
| #define NETDEV_BOOT_SETUP_MAX 8 | |
| extern int __init netdev_boot_setup(char *str); | |
| /* | |
| * Structure for NAPI scheduling similar to tasklet but with weighting | |
| */ | |
| struct napi_struct { | |
| /* The poll_list must only be managed by the entity which | |
| * changes the state of the NAPI_STATE_SCHED bit. This means | |
| * whoever atomically sets that bit can add this napi_struct | |
| * to the per-cpu poll_list, and whoever clears that bit | |
| * can remove from the list right before clearing the bit. | |
| */ | |
| struct list_head poll_list; | |
| unsigned long state; | |
| int weight; | |
| int (*poll)(struct napi_struct *, int); | |
| #ifdef CONFIG_NETPOLL | |
| spinlock_t poll_lock; | |
| int poll_owner; | |
| #endif | |
| unsigned int gro_count; | |
| struct net_device *dev; | |
| struct list_head dev_list; | |
| struct sk_buff *gro_list; | |
| struct sk_buff *skb; | |
| }; | |
| enum | |
| { | |
| NAPI_STATE_SCHED, /* Poll is scheduled */ | |
| NAPI_STATE_DISABLE, /* Disable pending */ | |
| NAPI_STATE_NPSVC, /* Netpoll - don't dequeue from poll_list */ | |
| }; | |
| enum { | |
| GRO_MERGED, | |
| GRO_MERGED_FREE, | |
| GRO_HELD, | |
| GRO_NORMAL, | |
| GRO_DROP, | |
| }; | |
| extern void __napi_schedule(struct napi_struct *n); | |
| static inline int napi_disable_pending(struct napi_struct *n) | |
| { | |
| return test_bit(NAPI_STATE_DISABLE, &n->state); | |
| } | |
| /** | |
| * napi_schedule_prep - check if napi can be scheduled | |
| * @n: napi context | |
| * | |
| * Test if NAPI routine is already running, and if not mark | |
| * it as running. This is used as a condition variable | |
| * insure only one NAPI poll instance runs. We also make | |
| * sure there is no pending NAPI disable. | |
| */ | |
| static inline int napi_schedule_prep(struct napi_struct *n) | |
| { | |
| return !napi_disable_pending(n) && | |
| !test_and_set_bit(NAPI_STATE_SCHED, &n->state); | |
| } | |
| /** | |
| * napi_schedule - schedule NAPI poll | |
| * @n: napi context | |
| * | |
| * Schedule NAPI poll routine to be called if it is not already | |
| * running. | |
| */ | |
| static inline void napi_schedule(struct napi_struct *n) | |
| { | |
| if (napi_schedule_prep(n)) | |
| __napi_schedule(n); | |
| } | |
| /* Try to reschedule poll. Called by dev->poll() after napi_complete(). */ | |
| static inline int napi_reschedule(struct napi_struct *napi) | |
| { | |
| if (napi_schedule_prep(napi)) { | |
| __napi_schedule(napi); | |
| return 1; | |
| } | |
| return 0; | |
| } | |
| /** | |
| * napi_complete - NAPI processing complete | |
| * @n: napi context | |
| * | |
| * Mark NAPI processing as complete. | |
| */ | |
| extern void __napi_complete(struct napi_struct *n); | |
| extern void napi_complete(struct napi_struct *n); | |
| /** | |
| * napi_disable - prevent NAPI from scheduling | |
| * @n: napi context | |
| * | |
| * Stop NAPI from being scheduled on this context. | |
| * Waits till any outstanding processing completes. | |
| */ | |
| static inline void napi_disable(struct napi_struct *n) | |
| { | |
| set_bit(NAPI_STATE_DISABLE, &n->state); | |
| while (test_and_set_bit(NAPI_STATE_SCHED, &n->state)) | |
| msleep(1); | |
| clear_bit(NAPI_STATE_DISABLE, &n->state); | |
| } | |
| /** | |
| * napi_enable - enable NAPI scheduling | |
| * @n: napi context | |
| * | |
| * Resume NAPI from being scheduled on this context. | |
| * Must be paired with napi_disable. | |
| */ | |
| static inline void napi_enable(struct napi_struct *n) | |
| { | |
| BUG_ON(!test_bit(NAPI_STATE_SCHED, &n->state)); | |
| smp_mb__before_clear_bit(); | |
| clear_bit(NAPI_STATE_SCHED, &n->state); | |
| } | |
| #ifdef CONFIG_SMP | |
| /** | |
| * napi_synchronize - wait until NAPI is not running | |
| * @n: napi context | |
| * | |
| * Wait until NAPI is done being scheduled on this context. | |
| * Waits till any outstanding processing completes but | |
| * does not disable future activations. | |
| */ | |
| static inline void napi_synchronize(const struct napi_struct *n) | |
| { | |
| while (test_bit(NAPI_STATE_SCHED, &n->state)) | |
| msleep(1); | |
| } | |
| #else | |
| # define napi_synchronize(n) barrier() | |
| #endif | |
| enum netdev_queue_state_t | |
| { | |
| __QUEUE_STATE_XOFF, | |
| __QUEUE_STATE_FROZEN, | |
| }; | |
| struct netdev_queue { | |
| struct net_device *dev; | |
| struct Qdisc *qdisc; | |
| unsigned long state; | |
| spinlock_t _xmit_lock; | |
| int xmit_lock_owner; | |
| struct Qdisc *qdisc_sleeping; | |
| } ____cacheline_aligned_in_smp; | |
| /* | |
| * This structure defines the management hooks for network devices. | |
| * The following hooks can be defined; unless noted otherwise, they are | |
| * optional and can be filled with a null pointer. | |
| * | |
| * int (*ndo_init)(struct net_device *dev); | |
| * This function is called once when network device is registered. | |
| * The network device can use this to any late stage initializaton | |
| * or semantic validattion. It can fail with an error code which will | |
| * be propogated back to register_netdev | |
| * | |
| * void (*ndo_uninit)(struct net_device *dev); | |
| * This function is called when device is unregistered or when registration | |
| * fails. It is not called if init fails. | |
| * | |
| * int (*ndo_open)(struct net_device *dev); | |
| * This function is called when network device transistions to the up | |
| * state. | |
| * | |
| * int (*ndo_stop)(struct net_device *dev); | |
| * This function is called when network device transistions to the down | |
| * state. | |
| * | |
| * int (*ndo_start_xmit)(struct sk_buff *skb, struct net_device *dev); | |
| * Called when a packet needs to be transmitted. | |
| * Must return NETDEV_TX_OK , NETDEV_TX_BUSY, or NETDEV_TX_LOCKED, | |
| * Required can not be NULL. | |
| * | |
| * u16 (*ndo_select_queue)(struct net_device *dev, struct sk_buff *skb); | |
| * Called to decide which queue to when device supports multiple | |
| * transmit queues. | |
| * | |
| * void (*ndo_change_rx_flags)(struct net_device *dev, int flags); | |
| * This function is called to allow device receiver to make | |
| * changes to configuration when multicast or promiscious is enabled. | |
| * | |
| * void (*ndo_set_rx_mode)(struct net_device *dev); | |
| * This function is called device changes address list filtering. | |
| * | |
| * void (*ndo_set_multicast_list)(struct net_device *dev); | |
| * This function is called when the multicast address list changes. | |
| * | |
| * int (*ndo_set_mac_address)(struct net_device *dev, void *addr); | |
| * This function is called when the Media Access Control address | |
| * needs to be changed. If not this interface is not defined, the | |
| * mac address can not be changed. | |
| * | |
| * int (*ndo_validate_addr)(struct net_device *dev); | |
| * Test if Media Access Control address is valid for the device. | |
| * | |
| * int (*ndo_do_ioctl)(struct net_device *dev, struct ifreq *ifr, int cmd); | |
| * Called when a user request an ioctl which can't be handled by | |
| * the generic interface code. If not defined ioctl's return | |
| * not supported error code. | |
| * | |
| * int (*ndo_set_config)(struct net_device *dev, struct ifmap *map); | |
| * Used to set network devices bus interface parameters. This interface | |
| * is retained for legacy reason, new devices should use the bus | |
| * interface (PCI) for low level management. | |
| * | |
| * int (*ndo_change_mtu)(struct net_device *dev, int new_mtu); | |
| * Called when a user wants to change the Maximum Transfer Unit | |
| * of a device. If not defined, any request to change MTU will | |
| * will return an error. | |
| * | |
| * void (*ndo_tx_timeout)(struct net_device *dev); | |
| * Callback uses when the transmitter has not made any progress | |
| * for dev->watchdog ticks. | |
| * | |
| * struct net_device_stats* (*get_stats)(struct net_device *dev); | |
| * Called when a user wants to get the network device usage | |
| * statistics. If not defined, the counters in dev->stats will | |
| * be used. | |
| * | |
| * void (*ndo_vlan_rx_register)(struct net_device *dev, struct vlan_group *grp); | |
| * If device support VLAN receive accleration | |
| * (ie. dev->features & NETIF_F_HW_VLAN_RX), then this function is called | |
| * when vlan groups for the device changes. Note: grp is NULL | |
| * if no vlan's groups are being used. | |
| * | |
| * void (*ndo_vlan_rx_add_vid)(struct net_device *dev, unsigned short vid); | |
| * If device support VLAN filtering (dev->features & NETIF_F_HW_VLAN_FILTER) | |
| * this function is called when a VLAN id is registered. | |
| * | |
| * void (*ndo_vlan_rx_kill_vid)(struct net_device *dev, unsigned short vid); | |
| * If device support VLAN filtering (dev->features & NETIF_F_HW_VLAN_FILTER) | |
| * this function is called when a VLAN id is unregistered. | |
| * | |
| * void (*ndo_poll_controller)(struct net_device *dev); | |
| */ | |
| #define HAVE_NET_DEVICE_OPS | |
| struct net_device_ops { | |
| int (*ndo_init)(struct net_device *dev); | |
| void (*ndo_uninit)(struct net_device *dev); | |
| int (*ndo_open)(struct net_device *dev); | |
| int (*ndo_stop)(struct net_device *dev); | |
| int (*ndo_start_xmit) (struct sk_buff *skb, | |
| struct net_device *dev); | |
| u16 (*ndo_select_queue)(struct net_device *dev, | |
| struct sk_buff *skb); | |
| #define HAVE_CHANGE_RX_FLAGS | |
| void (*ndo_change_rx_flags)(struct net_device *dev, | |
| int flags); | |
| #define HAVE_SET_RX_MODE | |
| void (*ndo_set_rx_mode)(struct net_device *dev); | |
| #define HAVE_MULTICAST | |
| void (*ndo_set_multicast_list)(struct net_device *dev); | |
| #define HAVE_SET_MAC_ADDR | |
| int (*ndo_set_mac_address)(struct net_device *dev, | |
| void *addr); | |
| #define HAVE_VALIDATE_ADDR | |
| int (*ndo_validate_addr)(struct net_device *dev); | |
| #define HAVE_PRIVATE_IOCTL | |
| int (*ndo_do_ioctl)(struct net_device *dev, | |
| struct ifreq *ifr, int cmd); | |
| #define HAVE_SET_CONFIG | |
| int (*ndo_set_config)(struct net_device *dev, | |
| struct ifmap *map); | |
| #define HAVE_CHANGE_MTU | |
| int (*ndo_change_mtu)(struct net_device *dev, | |
| int new_mtu); | |
| int (*ndo_neigh_setup)(struct net_device *dev, | |
| struct neigh_parms *); | |
| #define HAVE_TX_TIMEOUT | |
| void (*ndo_tx_timeout) (struct net_device *dev); | |
| struct net_device_stats* (*ndo_get_stats)(struct net_device *dev); | |
| void (*ndo_vlan_rx_register)(struct net_device *dev, | |
| struct vlan_group *grp); | |
| void (*ndo_vlan_rx_add_vid)(struct net_device *dev, | |
| unsigned short vid); | |
| void (*ndo_vlan_rx_kill_vid)(struct net_device *dev, | |
| unsigned short vid); | |
| #ifdef CONFIG_NET_POLL_CONTROLLER | |
| #define HAVE_NETDEV_POLL | |
| void (*ndo_poll_controller)(struct net_device *dev); | |
| #endif | |
| #if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE) | |
| int (*ndo_fcoe_ddp_setup)(struct net_device *dev, | |
| u16 xid, | |
| struct scatterlist *sgl, | |
| unsigned int sgc); | |
| int (*ndo_fcoe_ddp_done)(struct net_device *dev, | |
| u16 xid); | |
| #endif | |
| }; | |
| /* | |
| * The DEVICE structure. | |
| * Actually, this whole structure is a big mistake. It mixes I/O | |
| * data with strictly "high-level" data, and it has to know about | |
| * almost every data structure used in the INET module. | |
| * | |
| * FIXME: cleanup struct net_device such that network protocol info | |
| * moves out. | |
| */ | |
| struct net_device | |
| { | |
| /* | |
| * This is the first field of the "visible" part of this structure | |
| * (i.e. as seen by users in the "Space.c" file). It is the name | |
| * the interface. | |
| */ | |
| char name[IFNAMSIZ]; | |
| /* device name hash chain */ | |
| struct hlist_node name_hlist; | |
| /* snmp alias */ | |
| char *ifalias; | |
| /* | |
| * I/O specific fields | |
| * FIXME: Merge these and struct ifmap into one | |
| */ | |
| unsigned long mem_end; /* shared mem end */ | |
| unsigned long mem_start; /* shared mem start */ | |
| unsigned long base_addr; /* device I/O address */ | |
| unsigned int irq; /* device IRQ number */ | |
| /* | |
| * Some hardware also needs these fields, but they are not | |
| * part of the usual set specified in Space.c. | |
| */ | |
| unsigned char if_port; /* Selectable AUI, TP,..*/ | |
| unsigned char dma; /* DMA channel */ | |
| unsigned long state; | |
| struct list_head dev_list; | |
| struct list_head napi_list; | |
| /* Net device features */ | |
| unsigned long features; | |
| #define NETIF_F_SG 1 /* Scatter/gather IO. */ | |
| #define NETIF_F_IP_CSUM 2 /* Can checksum TCP/UDP over IPv4. */ | |
| #define NETIF_F_NO_CSUM 4 /* Does not require checksum. F.e. loopack. */ | |
| #define NETIF_F_HW_CSUM 8 /* Can checksum all the packets. */ | |
| #define NETIF_F_IPV6_CSUM 16 /* Can checksum TCP/UDP over IPV6 */ | |
| #define NETIF_F_HIGHDMA 32 /* Can DMA to high memory. */ | |
| #define NETIF_F_FRAGLIST 64 /* Scatter/gather IO. */ | |
| #define NETIF_F_HW_VLAN_TX 128 /* Transmit VLAN hw acceleration */ | |
| #define NETIF_F_HW_VLAN_RX 256 /* Receive VLAN hw acceleration */ | |
| #define NETIF_F_HW_VLAN_FILTER 512 /* Receive filtering on VLAN */ | |
| #define NETIF_F_VLAN_CHALLENGED 1024 /* Device cannot handle VLAN packets */ | |
| #define NETIF_F_GSO 2048 /* Enable software GSO. */ | |
| #define NETIF_F_LLTX 4096 /* LockLess TX - deprecated. Please */ | |
| /* do not use LLTX in new drivers */ | |
| #define NETIF_F_NETNS_LOCAL 8192 /* Does not change network namespaces */ | |
| #define NETIF_F_GRO 16384 /* Generic receive offload */ | |
| #define NETIF_F_LRO 32768 /* large receive offload */ | |
| #define NETIF_F_FCOE_CRC (1 << 24) /* FCoE CRC32 */ | |
| /* Segmentation offload features */ | |
| #define NETIF_F_GSO_SHIFT 16 | |
| #define NETIF_F_GSO_MASK 0x00ff0000 | |
| #define NETIF_F_TSO (SKB_GSO_TCPV4 << NETIF_F_GSO_SHIFT) | |
| #define NETIF_F_UFO (SKB_GSO_UDP << NETIF_F_GSO_SHIFT) | |
| #define NETIF_F_GSO_ROBUST (SKB_GSO_DODGY << NETIF_F_GSO_SHIFT) | |
| #define NETIF_F_TSO_ECN (SKB_GSO_TCP_ECN << NETIF_F_GSO_SHIFT) | |
| #define NETIF_F_TSO6 (SKB_GSO_TCPV6 << NETIF_F_GSO_SHIFT) | |
| #define NETIF_F_FSO (SKB_GSO_FCOE << NETIF_F_GSO_SHIFT) | |
| /* List of features with software fallbacks. */ | |
| #define NETIF_F_GSO_SOFTWARE (NETIF_F_TSO | NETIF_F_TSO_ECN | NETIF_F_TSO6) | |
| #define NETIF_F_GEN_CSUM (NETIF_F_NO_CSUM | NETIF_F_HW_CSUM) | |
| #define NETIF_F_V4_CSUM (NETIF_F_GEN_CSUM | NETIF_F_IP_CSUM) | |
| #define NETIF_F_V6_CSUM (NETIF_F_GEN_CSUM | NETIF_F_IPV6_CSUM) | |
| #define NETIF_F_ALL_CSUM (NETIF_F_V4_CSUM | NETIF_F_V6_CSUM) | |
| /* | |
| * If one device supports one of these features, then enable them | |
| * for all in netdev_increment_features. | |
| */ | |
| #define NETIF_F_ONE_FOR_ALL (NETIF_F_GSO_SOFTWARE | NETIF_F_GSO_ROBUST | \ | |
| NETIF_F_SG | NETIF_F_HIGHDMA | \ | |
| NETIF_F_FRAGLIST) | |
| /* Interface index. Unique device identifier */ | |
| int ifindex; | |
| int iflink; | |
| struct net_device_stats stats; | |
| #ifdef CONFIG_WIRELESS_EXT | |
| /* List of functions to handle Wireless Extensions (instead of ioctl). | |
| * See <net/iw_handler.h> for details. Jean II */ | |
| const struct iw_handler_def * wireless_handlers; | |
| /* Instance data managed by the core of Wireless Extensions. */ | |
| struct iw_public_data * wireless_data; | |
| #endif | |
| /* Management operations */ | |
| const struct net_device_ops *netdev_ops; | |
| const struct ethtool_ops *ethtool_ops; | |
| /* Hardware header description */ | |
| const struct header_ops *header_ops; | |
| unsigned int flags; /* interface flags (a la BSD) */ | |
| unsigned short gflags; | |
| unsigned short priv_flags; /* Like 'flags' but invisible to userspace. */ | |
| unsigned short padded; /* How much padding added by alloc_netdev() */ | |
| unsigned char operstate; /* RFC2863 operstate */ | |
| unsigned char link_mode; /* mapping policy to operstate */ | |
| unsigned mtu; /* interface MTU value */ | |
| unsigned short type; /* interface hardware type */ | |
| unsigned short hard_header_len; /* hardware hdr length */ | |
| /* extra head- and tailroom the hardware may need, but not in all cases | |
| * can this be guaranteed, especially tailroom. Some cases also use | |
| * LL_MAX_HEADER instead to allocate the skb. | |
| */ | |
| unsigned short needed_headroom; | |
| unsigned short needed_tailroom; | |
| struct net_device *master; /* Pointer to master device of a group, | |
| * which this device is member of. | |
| */ | |
| /* Interface address info. */ | |
| unsigned char perm_addr[MAX_ADDR_LEN]; /* permanent hw address */ | |
| unsigned char addr_len; /* hardware address length */ | |
| unsigned short dev_id; /* for shared network cards */ | |
| spinlock_t addr_list_lock; | |
| struct dev_addr_list *uc_list; /* Secondary unicast mac addresses */ | |
| int uc_count; /* Number of installed ucasts */ | |
| int uc_promisc; | |
| struct dev_addr_list *mc_list; /* Multicast mac addresses */ | |
| int mc_count; /* Number of installed mcasts */ | |
| unsigned int promiscuity; | |
| unsigned int allmulti; | |
| /* Protocol specific pointers */ | |
| #ifdef CONFIG_NET_DSA | |
| void *dsa_ptr; /* dsa specific data */ | |
| #endif | |
| void *atalk_ptr; /* AppleTalk link */ | |
| void *ip_ptr; /* IPv4 specific data */ | |
| void *dn_ptr; /* DECnet specific data */ | |
| void *ip6_ptr; /* IPv6 specific data */ | |
| void *ec_ptr; /* Econet specific data */ | |
| void *ax25_ptr; /* AX.25 specific data */ | |
| struct wireless_dev *ieee80211_ptr; /* IEEE 802.11 specific data, | |
| assign before registering */ | |
| /* | |
| * Cache line mostly used on receive path (including eth_type_trans()) | |
| */ | |
| unsigned long last_rx; /* Time of last Rx */ | |
| /* Interface address info used in eth_type_trans() */ | |
| unsigned char dev_addr[MAX_ADDR_LEN]; /* hw address, (before bcast | |
| because most packets are unicast) */ | |
| unsigned char broadcast[MAX_ADDR_LEN]; /* hw bcast add */ | |
| struct netdev_queue rx_queue; | |
| struct netdev_queue *_tx ____cacheline_aligned_in_smp; | |
| /* Number of TX queues allocated at alloc_netdev_mq() time */ | |
| unsigned int num_tx_queues; | |
| /* Number of TX queues currently active in device */ | |
| unsigned int real_num_tx_queues; | |
| unsigned long tx_queue_len; /* Max frames per queue allowed */ | |
| spinlock_t tx_global_lock; | |
| /* | |
| * One part is mostly used on xmit path (device) | |
| */ | |
| /* These may be needed for future network-power-down code. */ | |
| unsigned long trans_start; /* Time (in jiffies) of last Tx */ | |
| int watchdog_timeo; /* used by dev_watchdog() */ | |
| struct timer_list watchdog_timer; | |
| /* Number of references to this device */ | |
| atomic_t refcnt ____cacheline_aligned_in_smp; | |
| /* delayed register/unregister */ | |
| struct list_head todo_list; | |
| /* device index hash chain */ | |
| struct hlist_node index_hlist; | |
| struct net_device *link_watch_next; | |
| /* register/unregister state machine */ | |
| enum { NETREG_UNINITIALIZED=0, | |
| NETREG_REGISTERED, /* completed register_netdevice */ | |
| NETREG_UNREGISTERING, /* called unregister_netdevice */ | |
| NETREG_UNREGISTERED, /* completed unregister todo */ | |
| NETREG_RELEASED, /* called free_netdev */ | |
| NETREG_DUMMY, /* dummy device for NAPI poll */ | |
| } reg_state; | |
| /* Called from unregister, can be used to call free_netdev */ | |
| void (*destructor)(struct net_device *dev); | |
| #ifdef CONFIG_NETPOLL | |
| struct netpoll_info *npinfo; | |
| #endif | |
| #ifdef CONFIG_NET_NS | |
| /* Network namespace this network device is inside */ | |
| struct net *nd_net; | |
| #endif | |
| /* mid-layer private */ | |
| void *ml_priv; | |
| /* bridge stuff */ | |
| struct net_bridge_port *br_port; | |
| /* macvlan */ | |
| struct macvlan_port *macvlan_port; | |
| /* GARP */ | |
| struct garp_port *garp_port; | |
| /* class/net/name entry */ | |
| struct device dev; | |
| /* space for optional statistics and wireless sysfs groups */ | |
| struct attribute_group *sysfs_groups[3]; | |
| /* rtnetlink link ops */ | |
| const struct rtnl_link_ops *rtnl_link_ops; | |
| /* VLAN feature mask */ | |
| unsigned long vlan_features; | |
| /* for setting kernel sock attribute on TCP connection setup */ | |
| #define GSO_MAX_SIZE 65536 | |
| unsigned int gso_max_size; | |
| #ifdef CONFIG_DCB | |
| /* Data Center Bridging netlink ops */ | |
| struct dcbnl_rtnl_ops *dcbnl_ops; | |
| #endif | |
| #if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE) | |
| /* max exchange id for FCoE LRO by ddp */ | |
| unsigned int fcoe_ddp_xid; | |
| #endif | |
| #ifdef CONFIG_COMPAT_NET_DEV_OPS | |
| struct { | |
| int (*init)(struct net_device *dev); | |
| void (*uninit)(struct net_device *dev); | |
| int (*open)(struct net_device *dev); | |
| int (*stop)(struct net_device *dev); | |
| int (*hard_start_xmit) (struct sk_buff *skb, | |
| struct net_device *dev); | |
| u16 (*select_queue)(struct net_device *dev, | |
| struct sk_buff *skb); | |
| void (*change_rx_flags)(struct net_device *dev, | |
| int flags); | |
| void (*set_rx_mode)(struct net_device *dev); | |
| void (*set_multicast_list)(struct net_device *dev); | |
| int (*set_mac_address)(struct net_device *dev, | |
| void *addr); | |
| int (*validate_addr)(struct net_device *dev); | |
| int (*do_ioctl)(struct net_device *dev, | |
| struct ifreq *ifr, int cmd); | |
| int (*set_config)(struct net_device *dev, | |
| struct ifmap *map); | |
| int (*change_mtu)(struct net_device *dev, int new_mtu); | |
| int (*neigh_setup)(struct net_device *dev, | |
| struct neigh_parms *); | |
| void (*tx_timeout) (struct net_device *dev); | |
| struct net_device_stats* (*get_stats)(struct net_device *dev); | |
| void (*vlan_rx_register)(struct net_device *dev, | |
| struct vlan_group *grp); | |
| void (*vlan_rx_add_vid)(struct net_device *dev, | |
| unsigned short vid); | |
| void (*vlan_rx_kill_vid)(struct net_device *dev, | |
| unsigned short vid); | |
| #ifdef CONFIG_NET_POLL_CONTROLLER | |
| void (*poll_controller)(struct net_device *dev); | |
| #endif | |
| }; | |
| #endif | |
| }; | |
| #define to_net_dev(d) container_of(d, struct net_device, dev) | |
| #define NETDEV_ALIGN 32 | |
| #define NETDEV_ALIGN_CONST (NETDEV_ALIGN - 1) | |
| static inline | |
| struct netdev_queue *netdev_get_tx_queue(const struct net_device *dev, | |
| unsigned int index) | |
| { | |
| return &dev->_tx[index]; | |
| } | |
| static inline void netdev_for_each_tx_queue(struct net_device *dev, | |
| void (*f)(struct net_device *, | |
| struct netdev_queue *, | |
| void *), | |
| void *arg) | |
| { | |
| unsigned int i; | |
| for (i = 0; i < dev->num_tx_queues; i++) | |
| f(dev, &dev->_tx[i], arg); | |
| } | |
| /* | |
| * Net namespace inlines | |
| */ | |
| static inline | |
| struct net *dev_net(const struct net_device *dev) | |
| { | |
| #ifdef CONFIG_NET_NS | |
| return dev->nd_net; | |
| #else | |
| return &init_net; | |
| #endif | |
| } | |
| static inline | |
| void dev_net_set(struct net_device *dev, struct net *net) | |
| { | |
| #ifdef CONFIG_NET_NS | |
| release_net(dev->nd_net); | |
| dev->nd_net = hold_net(net); | |
| #endif | |
| } | |
| static inline bool netdev_uses_dsa_tags(struct net_device *dev) | |
| { | |
| #ifdef CONFIG_NET_DSA_TAG_DSA | |
| if (dev->dsa_ptr != NULL) | |
| return dsa_uses_dsa_tags(dev->dsa_ptr); | |
| #endif | |
| return 0; | |
| } | |
| static inline bool netdev_uses_trailer_tags(struct net_device *dev) | |
| { | |
| #ifdef CONFIG_NET_DSA_TAG_TRAILER | |
| if (dev->dsa_ptr != NULL) | |
| return dsa_uses_trailer_tags(dev->dsa_ptr); | |
| #endif | |
| return 0; | |
| } | |
| /** | |
| * netdev_priv - access network device private data | |
| * @dev: network device | |
| * | |
| * Get network device private data | |
| */ | |
| static inline void *netdev_priv(const struct net_device *dev) | |
| { | |
| return (char *)dev + ((sizeof(struct net_device) | |
| + NETDEV_ALIGN_CONST) | |
| & ~NETDEV_ALIGN_CONST); | |
| } | |
| /* Set the sysfs physical device reference for the network logical device | |
| * if set prior to registration will cause a symlink during initialization. | |
| */ | |
| #define SET_NETDEV_DEV(net, pdev) ((net)->dev.parent = (pdev)) | |
| /** | |
| * netif_napi_add - initialize a napi context | |
| * @dev: network device | |
| * @napi: napi context | |
| * @poll: polling function | |
| * @weight: default weight | |
| * | |
| * netif_napi_add() must be used to initialize a napi context prior to calling | |
| * *any* of the other napi related functions. | |
| */ | |
| void netif_napi_add(struct net_device *dev, struct napi_struct *napi, | |
| int (*poll)(struct napi_struct *, int), int weight); | |
| /** | |
| * netif_napi_del - remove a napi context | |
| * @napi: napi context | |
| * | |
| * netif_napi_del() removes a napi context from the network device napi list | |
| */ | |
| void netif_napi_del(struct napi_struct *napi); | |
| struct napi_gro_cb { | |
| /* This indicates where we are processing relative to skb->data. */ | |
| int data_offset; | |
| /* This is non-zero if the packet may be of the same flow. */ | |
| int same_flow; | |
| /* This is non-zero if the packet cannot be merged with the new skb. */ | |
| int flush; | |
| /* Number of segments aggregated. */ | |
| int count; | |
| /* Free the skb? */ | |
| int free; | |
| }; | |
| #define NAPI_GRO_CB(skb) ((struct napi_gro_cb *)(skb)->cb) | |
| struct packet_type { | |
| __be16 type; /* This is really htons(ether_type). */ | |
| struct net_device *dev; /* NULL is wildcarded here */ | |
| int (*func) (struct sk_buff *, | |
| struct net_device *, | |
| struct packet_type *, | |
| struct net_device *); | |
| struct sk_buff *(*gso_segment)(struct sk_buff *skb, | |
| int features); | |
| int (*gso_send_check)(struct sk_buff *skb); | |
| struct sk_buff **(*gro_receive)(struct sk_buff **head, | |
| struct sk_buff *skb); | |
| int (*gro_complete)(struct sk_buff *skb); | |
| void *af_packet_priv; | |
| struct list_head list; | |
| }; | |
| struct napi_gro_fraginfo { | |
| skb_frag_t frags[MAX_SKB_FRAGS]; | |
| unsigned int nr_frags; | |
| unsigned int ip_summed; | |
| unsigned int len; | |
| __wsum csum; | |
| }; | |
| #include <linux/interrupt.h> | |
| #include <linux/notifier.h> | |
| extern rwlock_t dev_base_lock; /* Device list lock */ | |
| #define for_each_netdev(net, d) \ | |
| list_for_each_entry(d, &(net)->dev_base_head, dev_list) | |
| #define for_each_netdev_safe(net, d, n) \ | |
| list_for_each_entry_safe(d, n, &(net)->dev_base_head, dev_list) | |
| #define for_each_netdev_continue(net, d) \ | |
| list_for_each_entry_continue(d, &(net)->dev_base_head, dev_list) | |
| #define net_device_entry(lh) list_entry(lh, struct net_device, dev_list) | |
| static inline struct net_device *next_net_device(struct net_device *dev) | |
| { | |
| struct list_head *lh; | |
| struct net *net; | |
| net = dev_net(dev); | |
| lh = dev->dev_list.next; | |
| return lh == &net->dev_base_head ? NULL : net_device_entry(lh); | |
| } | |
| static inline struct net_device *first_net_device(struct net *net) | |
| { | |
| return list_empty(&net->dev_base_head) ? NULL : | |
| net_device_entry(net->dev_base_head.next); | |
| } | |
| extern int netdev_boot_setup_check(struct net_device *dev); | |
| extern unsigned long netdev_boot_base(const char *prefix, int unit); | |
| extern struct net_device *dev_getbyhwaddr(struct net *net, unsigned short type, char *hwaddr); | |
| extern struct net_device *dev_getfirstbyhwtype(struct net *net, unsigned short type); | |
| extern struct net_device *__dev_getfirstbyhwtype(struct net *net, unsigned short type); | |
| extern void dev_add_pack(struct packet_type *pt); | |
| extern void dev_remove_pack(struct packet_type *pt); | |
| extern void __dev_remove_pack(struct packet_type *pt); | |
| extern struct net_device *dev_get_by_flags(struct net *net, unsigned short flags, | |
| unsigned short mask); | |
| extern struct net_device *dev_get_by_name(struct net *net, const char *name); | |
| extern struct net_device *__dev_get_by_name(struct net *net, const char *name); | |
| extern int dev_alloc_name(struct net_device *dev, const char *name); | |
| extern int dev_open(struct net_device *dev); | |
| extern int dev_close(struct net_device *dev); | |
| extern void dev_disable_lro(struct net_device *dev); | |
| extern int dev_queue_xmit(struct sk_buff *skb); | |
| extern int register_netdevice(struct net_device *dev); | |
| extern void unregister_netdevice(struct net_device *dev); | |
| extern void free_netdev(struct net_device *dev); | |
| extern void synchronize_net(void); | |
| extern int register_netdevice_notifier(struct notifier_block *nb); | |
| extern int unregister_netdevice_notifier(struct notifier_block *nb); | |
| extern int init_dummy_netdev(struct net_device *dev); | |
| extern void netdev_resync_ops(struct net_device *dev); | |
| extern int call_netdevice_notifiers(unsigned long val, struct net_device *dev); | |
| extern struct net_device *dev_get_by_index(struct net *net, int ifindex); | |
| extern struct net_device *__dev_get_by_index(struct net *net, int ifindex); | |
| extern int dev_restart(struct net_device *dev); | |
| #ifdef CONFIG_NETPOLL_TRAP | |
| extern int netpoll_trap(void); | |
| #endif | |
| extern void *skb_gro_header(struct sk_buff *skb, unsigned int hlen); | |
| extern int skb_gro_receive(struct sk_buff **head, | |
| struct sk_buff *skb); | |
| static inline unsigned int skb_gro_offset(const struct sk_buff *skb) | |
| { | |
| return NAPI_GRO_CB(skb)->data_offset; | |
| } | |
| static inline unsigned int skb_gro_len(const struct sk_buff *skb) | |
| { | |
| return skb->len - NAPI_GRO_CB(skb)->data_offset; | |
| } | |
| static inline void skb_gro_pull(struct sk_buff *skb, unsigned int len) | |
| { | |
| NAPI_GRO_CB(skb)->data_offset += len; | |
| } | |
| static inline void skb_gro_reset_offset(struct sk_buff *skb) | |
| { | |
| NAPI_GRO_CB(skb)->data_offset = 0; | |
| } | |
| static inline void *skb_gro_mac_header(struct sk_buff *skb) | |
| { | |
| return skb_mac_header(skb) < skb->data ? skb_mac_header(skb) : | |
| page_address(skb_shinfo(skb)->frags[0].page) + | |
| skb_shinfo(skb)->frags[0].page_offset; | |
| } | |
| static inline int dev_hard_header(struct sk_buff *skb, struct net_device *dev, | |
| unsigned short type, | |
| const void *daddr, const void *saddr, | |
| unsigned len) | |
| { | |
| if (!dev->header_ops || !dev->header_ops->create) | |
| return 0; | |
| return dev->header_ops->create(skb, dev, type, daddr, saddr, len); | |
| } | |
| static inline int dev_parse_header(const struct sk_buff *skb, | |
| unsigned char *haddr) | |
| { | |
| const struct net_device *dev = skb->dev; | |
| if (!dev->header_ops || !dev->header_ops->parse) | |
| return 0; | |
| return dev->header_ops->parse(skb, haddr); | |
| } | |
| typedef int gifconf_func_t(struct net_device * dev, char __user * bufptr, int len); | |
| extern int register_gifconf(unsigned int family, gifconf_func_t * gifconf); | |
| static inline int unregister_gifconf(unsigned int family) | |
| { | |
| return register_gifconf(family, NULL); | |
| } | |
| /* | |
| * Incoming packets are placed on per-cpu queues so that | |
| * no locking is needed. | |
| */ | |
| struct softnet_data | |
| { | |
| struct Qdisc *output_queue; | |
| struct sk_buff_head input_pkt_queue; | |
| struct list_head poll_list; | |
| struct sk_buff *completion_queue; | |
| struct napi_struct backlog; | |
| }; | |
| DECLARE_PER_CPU(struct softnet_data,softnet_data); | |
| #define HAVE_NETIF_QUEUE | |
| extern void __netif_schedule(struct Qdisc *q); | |
| static inline void netif_schedule_queue(struct netdev_queue *txq) | |
| { | |
| if (!test_bit(__QUEUE_STATE_XOFF, &txq->state)) | |
| __netif_schedule(txq->qdisc); | |
| } | |
| static inline void netif_tx_schedule_all(struct net_device *dev) | |
| { | |
| unsigned int i; | |
| for (i = 0; i < dev->num_tx_queues; i++) | |
| netif_schedule_queue(netdev_get_tx_queue(dev, i)); | |
| } | |
| static inline void netif_tx_start_queue(struct netdev_queue *dev_queue) | |
| { | |
| clear_bit(__QUEUE_STATE_XOFF, &dev_queue->state); | |
| } | |
| /** | |
| * netif_start_queue - allow transmit | |
| * @dev: network device | |
| * | |
| * Allow upper layers to call the device hard_start_xmit routine. | |
| */ | |
| static inline void netif_start_queue(struct net_device *dev) | |
| { | |
| netif_tx_start_queue(netdev_get_tx_queue(dev, 0)); | |
| } | |
| static inline void netif_tx_start_all_queues(struct net_device *dev) | |
| { | |
| unsigned int i; | |
| for (i = 0; i < dev->num_tx_queues; i++) { | |
| struct netdev_queue *txq = netdev_get_tx_queue(dev, i); | |
| netif_tx_start_queue(txq); | |
| } | |
| } | |
| static inline void netif_tx_wake_queue(struct netdev_queue *dev_queue) | |
| { | |
| #ifdef CONFIG_NETPOLL_TRAP | |
| if (netpoll_trap()) { | |
| clear_bit(__QUEUE_STATE_XOFF, &dev_queue->state); | |
| return; | |
| } | |
| #endif | |
| if (test_and_clear_bit(__QUEUE_STATE_XOFF, &dev_queue->state)) | |
| __netif_schedule(dev_queue->qdisc); | |
| } | |
| /** | |
| * netif_wake_queue - restart transmit | |
| * @dev: network device | |
| * | |
| * Allow upper layers to call the device hard_start_xmit routine. | |
| * Used for flow control when transmit resources are available. | |
| */ | |
| static inline void netif_wake_queue(struct net_device *dev) | |
| { | |
| netif_tx_wake_queue(netdev_get_tx_queue(dev, 0)); | |
| } | |
| static inline void netif_tx_wake_all_queues(struct net_device *dev) | |
| { | |
| unsigned int i; | |
| for (i = 0; i < dev->num_tx_queues; i++) { | |
| struct netdev_queue *txq = netdev_get_tx_queue(dev, i); | |
| netif_tx_wake_queue(txq); | |
| } | |
| } | |
| static inline void netif_tx_stop_queue(struct netdev_queue *dev_queue) | |
| { | |
| set_bit(__QUEUE_STATE_XOFF, &dev_queue->state); | |
| } | |
| /** | |
| * netif_stop_queue - stop transmitted packets | |
| * @dev: network device | |
| * | |
| * Stop upper layers calling the device hard_start_xmit routine. | |
| * Used for flow control when transmit resources are unavailable. | |
| */ | |
| static inline void netif_stop_queue(struct net_device *dev) | |
| { | |
| netif_tx_stop_queue(netdev_get_tx_queue(dev, 0)); | |
| } | |
| static inline void netif_tx_stop_all_queues(struct net_device *dev) | |
| { | |
| unsigned int i; | |
| for (i = 0; i < dev->num_tx_queues; i++) { | |
| struct netdev_queue *txq = netdev_get_tx_queue(dev, i); | |
| netif_tx_stop_queue(txq); | |
| } | |
| } | |
| static inline int netif_tx_queue_stopped(const struct netdev_queue *dev_queue) | |
| { | |
| return test_bit(__QUEUE_STATE_XOFF, &dev_queue->state); | |
| } | |
| /** | |
| * netif_queue_stopped - test if transmit queue is flowblocked | |
| * @dev: network device | |
| * | |
| * Test if transmit queue on device is currently unable to send. | |
| */ | |
| static inline int netif_queue_stopped(const struct net_device *dev) | |
| { | |
| return netif_tx_queue_stopped(netdev_get_tx_queue(dev, 0)); | |
| } | |
| static inline int netif_tx_queue_frozen(const struct netdev_queue *dev_queue) | |
| { | |
| return test_bit(__QUEUE_STATE_FROZEN, &dev_queue->state); | |
| } | |
| /** | |
| * netif_running - test if up | |
| * @dev: network device | |
| * | |
| * Test if the device has been brought up. | |
| */ | |
| static inline int netif_running(const struct net_device *dev) | |
| { | |
| return test_bit(__LINK_STATE_START, &dev->state); | |
| } | |
| /* | |
| * Routines to manage the subqueues on a device. We only need start | |
| * stop, and a check if it's stopped. All other device management is | |
| * done at the overall netdevice level. | |
| * Also test the device if we're multiqueue. | |
| */ | |
| /** | |
| * netif_start_subqueue - allow sending packets on subqueue | |
| * @dev: network device | |
| * @queue_index: sub queue index | |
| * | |
| * Start individual transmit queue of a device with multiple transmit queues. | |
| */ | |
| static inline void netif_start_subqueue(struct net_device *dev, u16 queue_index) | |
| { | |
| struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index); | |
| clear_bit(__QUEUE_STATE_XOFF, &txq->state); | |
| } | |
| /** | |
| * netif_stop_subqueue - stop sending packets on subqueue | |
| * @dev: network device | |
| * @queue_index: sub queue index | |
| * | |
| * Stop individual transmit queue of a device with multiple transmit queues. | |
| */ | |
| static inline void netif_stop_subqueue(struct net_device *dev, u16 queue_index) | |
| { | |
| struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index); | |
| #ifdef CONFIG_NETPOLL_TRAP | |
| if (netpoll_trap()) | |
| return; | |
| #endif | |
| set_bit(__QUEUE_STATE_XOFF, &txq->state); | |
| } | |
| /** | |
| * netif_subqueue_stopped - test status of subqueue | |
| * @dev: network device | |
| * @queue_index: sub queue index | |
| * | |
| * Check individual transmit queue of a device with multiple transmit queues. | |
| */ | |
| static inline int __netif_subqueue_stopped(const struct net_device *dev, | |
| u16 queue_index) | |
| { | |
| struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index); | |
| return test_bit(__QUEUE_STATE_XOFF, &txq->state); | |
| } | |
| static inline int netif_subqueue_stopped(const struct net_device *dev, | |
| struct sk_buff *skb) | |
| { | |
| return __netif_subqueue_stopped(dev, skb_get_queue_mapping(skb)); | |
| } | |
| /** | |
| * netif_wake_subqueue - allow sending packets on subqueue | |
| * @dev: network device | |
| * @queue_index: sub queue index | |
| * | |
| * Resume individual transmit queue of a device with multiple transmit queues. | |
| */ | |
| static inline void netif_wake_subqueue(struct net_device *dev, u16 queue_index) | |
| { | |
| struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index); | |
| #ifdef CONFIG_NETPOLL_TRAP | |
| if (netpoll_trap()) | |
| return; | |
| #endif | |
| if (test_and_clear_bit(__QUEUE_STATE_XOFF, &txq->state)) | |
| __netif_schedule(txq->qdisc); | |
| } | |
| /** | |
| * netif_is_multiqueue - test if device has multiple transmit queues | |
| * @dev: network device | |
| * | |
| * Check if device has multiple transmit queues | |
| */ | |
| static inline int netif_is_multiqueue(const struct net_device *dev) | |
| { | |
| return (dev->num_tx_queues > 1); | |
| } | |
| /* Use this variant when it is known for sure that it | |
| * is executing from hardware interrupt context or with hardware interrupts | |
| * disabled. | |
| */ | |
| extern void dev_kfree_skb_irq(struct sk_buff *skb); | |
| /* Use this variant in places where it could be invoked | |
| * from either hardware interrupt or other context, with hardware interrupts | |
| * either disabled or enabled. | |
| */ | |
| extern void dev_kfree_skb_any(struct sk_buff *skb); | |
| #define HAVE_NETIF_RX 1 | |
| extern int netif_rx(struct sk_buff *skb); | |
| extern int netif_rx_ni(struct sk_buff *skb); | |
| #define HAVE_NETIF_RECEIVE_SKB 1 | |
| extern int netif_receive_skb(struct sk_buff *skb); | |
| extern void napi_gro_flush(struct napi_struct *napi); | |
| extern int dev_gro_receive(struct napi_struct *napi, | |
| struct sk_buff *skb); | |
| extern int napi_skb_finish(int ret, struct sk_buff *skb); | |
| extern int napi_gro_receive(struct napi_struct *napi, | |
| struct sk_buff *skb); | |
| extern void napi_reuse_skb(struct napi_struct *napi, | |
| struct sk_buff *skb); | |
| extern struct sk_buff * napi_fraginfo_skb(struct napi_struct *napi, | |
| struct napi_gro_fraginfo *info); | |
| extern int napi_frags_finish(struct napi_struct *napi, | |
| struct sk_buff *skb, int ret); | |
| extern int napi_gro_frags(struct napi_struct *napi, | |
| struct napi_gro_fraginfo *info); | |
| extern void netif_nit_deliver(struct sk_buff *skb); | |
| extern int dev_valid_name(const char *name); | |
| extern int dev_ioctl(struct net *net, unsigned int cmd, void __user *); | |
| extern int dev_ethtool(struct net *net, struct ifreq *); | |
| extern unsigned dev_get_flags(const struct net_device *); | |
| extern int dev_change_flags(struct net_device *, unsigned); | |
| extern int dev_change_name(struct net_device *, const char *); | |
| extern int dev_set_alias(struct net_device *, const char *, size_t); | |
| extern int dev_change_net_namespace(struct net_device *, | |
| struct net *, const char *); | |
| extern int dev_set_mtu(struct net_device *, int); | |
| extern int dev_set_mac_address(struct net_device *, | |
| struct sockaddr *); | |
| extern int dev_hard_start_xmit(struct sk_buff *skb, | |
| struct net_device *dev, | |
| struct netdev_queue *txq); | |
| extern int netdev_budget; | |
| /* Called by rtnetlink.c:rtnl_unlock() */ | |
| extern void netdev_run_todo(void); | |
| /** | |
| * dev_put - release reference to device | |
| * @dev: network device | |
| * | |
| * Release reference to device to allow it to be freed. | |
| */ | |
| static inline void dev_put(struct net_device *dev) | |
| { | |
| atomic_dec(&dev->refcnt); | |
| } | |
| /** | |
| * dev_hold - get reference to device | |
| * @dev: network device | |
| * | |
| * Hold reference to device to keep it from being freed. | |
| */ | |
| static inline void dev_hold(struct net_device *dev) | |
| { | |
| atomic_inc(&dev->refcnt); | |
| } | |
| /* Carrier loss detection, dial on demand. The functions netif_carrier_on | |
| * and _off may be called from IRQ context, but it is caller | |
| * who is responsible for serialization of these calls. | |
| * | |
| * The name carrier is inappropriate, these functions should really be | |
| * called netif_lowerlayer_*() because they represent the state of any | |
| * kind of lower layer not just hardware media. | |
| */ | |
| extern void linkwatch_fire_event(struct net_device *dev); | |
| /** | |
| * netif_carrier_ok - test if carrier present | |
| * @dev: network device | |
| * | |
| * Check if carrier is present on device | |
| */ | |
| static inline int netif_carrier_ok(const struct net_device *dev) | |
| { | |
| return !test_bit(__LINK_STATE_NOCARRIER, &dev->state); | |
| } | |
| extern void __netdev_watchdog_up(struct net_device *dev); | |
| extern void netif_carrier_on(struct net_device *dev); | |
| extern void netif_carrier_off(struct net_device *dev); | |
| /** | |
| * netif_dormant_on - mark device as dormant. | |
| * @dev: network device | |
| * | |
| * Mark device as dormant (as per RFC2863). | |
| * | |
| * The dormant state indicates that the relevant interface is not | |
| * actually in a condition to pass packets (i.e., it is not 'up') but is | |
| * in a "pending" state, waiting for some external event. For "on- | |
| * demand" interfaces, this new state identifies the situation where the | |
| * interface is waiting for events to place it in the up state. | |
| * | |
| */ | |
| static inline void netif_dormant_on(struct net_device *dev) | |
| { | |
| if (!test_and_set_bit(__LINK_STATE_DORMANT, &dev->state)) | |
| linkwatch_fire_event(dev); | |
| } | |
| /** | |
| * netif_dormant_off - set device as not dormant. | |
| * @dev: network device | |
| * | |
| * Device is not in dormant state. | |
| */ | |
| static inline void netif_dormant_off(struct net_device *dev) | |
| { | |
| if (test_and_clear_bit(__LINK_STATE_DORMANT, &dev->state)) | |
| linkwatch_fire_event(dev); | |
| } | |
| /** | |
| * netif_dormant - test if carrier present | |
| * @dev: network device | |
| * | |
| * Check if carrier is present on device | |
| */ | |
| static inline int netif_dormant(const struct net_device *dev) | |
| { | |
| return test_bit(__LINK_STATE_DORMANT, &dev->state); | |
| } | |
| /** | |
| * netif_oper_up - test if device is operational | |
| * @dev: network device | |
| * | |
| * Check if carrier is operational | |
| */ | |
| static inline int netif_oper_up(const struct net_device *dev) { | |
| return (dev->operstate == IF_OPER_UP || | |
| dev->operstate == IF_OPER_UNKNOWN /* backward compat */); | |
| } | |
| /** | |
| * netif_device_present - is device available or removed | |
| * @dev: network device | |
| * | |
| * Check if device has not been removed from system. | |
| */ | |
| static inline int netif_device_present(struct net_device *dev) | |
| { | |
| return test_bit(__LINK_STATE_PRESENT, &dev->state); | |
| } | |
| extern void netif_device_detach(struct net_device *dev); | |
| extern void netif_device_attach(struct net_device *dev); | |
| /* | |
| * Network interface message level settings | |
| */ | |
| #define HAVE_NETIF_MSG 1 | |
| enum { | |
| NETIF_MSG_DRV = 0x0001, | |
| NETIF_MSG_PROBE = 0x0002, | |
| NETIF_MSG_LINK = 0x0004, | |
| NETIF_MSG_TIMER = 0x0008, | |
| NETIF_MSG_IFDOWN = 0x0010, | |
| NETIF_MSG_IFUP = 0x0020, | |
| NETIF_MSG_RX_ERR = 0x0040, | |
| NETIF_MSG_TX_ERR = 0x0080, | |
| NETIF_MSG_TX_QUEUED = 0x0100, | |
| NETIF_MSG_INTR = 0x0200, | |
| NETIF_MSG_TX_DONE = 0x0400, | |
| NETIF_MSG_RX_STATUS = 0x0800, | |
| NETIF_MSG_PKTDATA = 0x1000, | |
| NETIF_MSG_HW = 0x2000, | |
| NETIF_MSG_WOL = 0x4000, | |
| }; | |
| #define netif_msg_drv(p) ((p)->msg_enable & NETIF_MSG_DRV) | |
| #define netif_msg_probe(p) ((p)->msg_enable & NETIF_MSG_PROBE) | |
| #define netif_msg_link(p) ((p)->msg_enable & NETIF_MSG_LINK) | |
| #define netif_msg_timer(p) ((p)->msg_enable & NETIF_MSG_TIMER) | |
| #define netif_msg_ifdown(p) ((p)->msg_enable & NETIF_MSG_IFDOWN) | |
| #define netif_msg_ifup(p) ((p)->msg_enable & NETIF_MSG_IFUP) | |
| #define netif_msg_rx_err(p) ((p)->msg_enable & NETIF_MSG_RX_ERR) | |
| #define netif_msg_tx_err(p) ((p)->msg_enable & NETIF_MSG_TX_ERR) | |
| #define netif_msg_tx_queued(p) ((p)->msg_enable & NETIF_MSG_TX_QUEUED) | |
| #define netif_msg_intr(p) ((p)->msg_enable & NETIF_MSG_INTR) | |
| #define netif_msg_tx_done(p) ((p)->msg_enable & NETIF_MSG_TX_DONE) | |
| #define netif_msg_rx_status(p) ((p)->msg_enable & NETIF_MSG_RX_STATUS) | |
| #define netif_msg_pktdata(p) ((p)->msg_enable & NETIF_MSG_PKTDATA) | |
| #define netif_msg_hw(p) ((p)->msg_enable & NETIF_MSG_HW) | |
| #define netif_msg_wol(p) ((p)->msg_enable & NETIF_MSG_WOL) | |
| static inline u32 netif_msg_init(int debug_value, int default_msg_enable_bits) | |
| { | |
| /* use default */ | |
| if (debug_value < 0 || debug_value >= (sizeof(u32) * 8)) | |
| return default_msg_enable_bits; | |
| if (debug_value == 0) /* no output */ | |
| return 0; | |
| /* set low N bits */ | |
| return (1 << debug_value) - 1; | |
| } | |
| static inline void __netif_tx_lock(struct netdev_queue *txq, int cpu) | |
| { | |
| spin_lock(&txq->_xmit_lock); | |
| txq->xmit_lock_owner = cpu; | |
| } | |
| static inline void __netif_tx_lock_bh(struct netdev_queue *txq) | |
| { | |
| spin_lock_bh(&txq->_xmit_lock); | |
| txq->xmit_lock_owner = smp_processor_id(); | |
| } | |
| static inline int __netif_tx_trylock(struct netdev_queue *txq) | |
| { | |
| int ok = spin_trylock(&txq->_xmit_lock); | |
| if (likely(ok)) | |
| txq->xmit_lock_owner = smp_processor_id(); | |
| return ok; | |
| } | |
| static inline void __netif_tx_unlock(struct netdev_queue *txq) | |
| { | |
| txq->xmit_lock_owner = -1; | |
| spin_unlock(&txq->_xmit_lock); | |
| } | |
| static inline void __netif_tx_unlock_bh(struct netdev_queue *txq) | |
| { | |
| txq->xmit_lock_owner = -1; | |
| spin_unlock_bh(&txq->_xmit_lock); | |
| } | |
| /** | |
| * netif_tx_lock - grab network device transmit lock | |
| * @dev: network device | |
| * | |
| * Get network device transmit lock | |
| */ | |
| static inline void netif_tx_lock(struct net_device *dev) | |
| { | |
| unsigned int i; | |
| int cpu; | |
| spin_lock(&dev->tx_global_lock); | |
| cpu = smp_processor_id(); | |
| for (i = 0; i < dev->num_tx_queues; i++) { | |
| struct netdev_queue *txq = netdev_get_tx_queue(dev, i); | |
| /* We are the only thread of execution doing a | |
| * freeze, but we have to grab the _xmit_lock in | |
| * order to synchronize with threads which are in | |
| * the ->hard_start_xmit() handler and already | |
| * checked the frozen bit. | |
| */ | |
| __netif_tx_lock(txq, cpu); | |
| set_bit(__QUEUE_STATE_FROZEN, &txq->state); | |
| __netif_tx_unlock(txq); | |
| } | |
| } | |
| static inline void netif_tx_lock_bh(struct net_device *dev) | |
| { | |
| local_bh_disable(); | |
| netif_tx_lock(dev); | |
| } | |
| static inline void netif_tx_unlock(struct net_device *dev) | |
| { | |
| unsigned int i; | |
| for (i = 0; i < dev->num_tx_queues; i++) { | |
| struct netdev_queue *txq = netdev_get_tx_queue(dev, i); | |
| /* No need to grab the _xmit_lock here. If the | |
| * queue is not stopped for another reason, we | |
| * force a schedule. | |
| */ | |
| clear_bit(__QUEUE_STATE_FROZEN, &txq->state); | |
| if (!test_bit(__QUEUE_STATE_XOFF, &txq->state)) | |
| __netif_schedule(txq->qdisc); | |
| } | |
| spin_unlock(&dev->tx_global_lock); | |
| } | |
| static inline void netif_tx_unlock_bh(struct net_device *dev) | |
| { | |
| netif_tx_unlock(dev); | |
| local_bh_enable(); | |
| } | |
| #define HARD_TX_LOCK(dev, txq, cpu) { \ | |
| if ((dev->features & NETIF_F_LLTX) == 0) { \ | |
| __netif_tx_lock(txq, cpu); \ | |
| } \ | |
| } | |
| #define HARD_TX_UNLOCK(dev, txq) { \ | |
| if ((dev->features & NETIF_F_LLTX) == 0) { \ | |
| __netif_tx_unlock(txq); \ | |
| } \ | |
| } | |
| static inline void netif_tx_disable(struct net_device *dev) | |
| { | |
| unsigned int i; | |
| int cpu; | |
| local_bh_disable(); | |
| cpu = smp_processor_id(); | |
| for (i = 0; i < dev->num_tx_queues; i++) { | |
| struct netdev_queue *txq = netdev_get_tx_queue(dev, i); | |
| __netif_tx_lock(txq, cpu); | |
| netif_tx_stop_queue(txq); | |
| __netif_tx_unlock(txq); | |
| } | |
| local_bh_enable(); | |
| } | |
| static inline void netif_addr_lock(struct net_device *dev) | |
| { | |
| spin_lock(&dev->addr_list_lock); | |
| } | |
| static inline void netif_addr_lock_bh(struct net_device *dev) | |
| { | |
| spin_lock_bh(&dev->addr_list_lock); | |
| } | |
| static inline void netif_addr_unlock(struct net_device *dev) | |
| { | |
| spin_unlock(&dev->addr_list_lock); | |
| } | |
| static inline void netif_addr_unlock_bh(struct net_device *dev) | |
| { | |
| spin_unlock_bh(&dev->addr_list_lock); | |
| } | |
| /* These functions live elsewhere (drivers/net/net_init.c, but related) */ | |
| extern void ether_setup(struct net_device *dev); | |
| /* Support for loadable net-drivers */ | |
| extern struct net_device *alloc_netdev_mq(int sizeof_priv, const char *name, | |
| void (*setup)(struct net_device *), | |
| unsigned int queue_count); | |
| #define alloc_netdev(sizeof_priv, name, setup) \ | |
| alloc_netdev_mq(sizeof_priv, name, setup, 1) | |
| extern int register_netdev(struct net_device *dev); | |
| extern void unregister_netdev(struct net_device *dev); | |
| /* Functions used for secondary unicast and multicast support */ | |
| extern void dev_set_rx_mode(struct net_device *dev); | |
| extern void __dev_set_rx_mode(struct net_device *dev); | |
| extern int dev_unicast_delete(struct net_device *dev, void *addr, int alen); | |
| extern int dev_unicast_add(struct net_device *dev, void *addr, int alen); | |
| extern int dev_unicast_sync(struct net_device *to, struct net_device *from); | |
| extern void dev_unicast_unsync(struct net_device *to, struct net_device *from); | |
| extern int dev_mc_delete(struct net_device *dev, void *addr, int alen, int all); | |
| extern int dev_mc_add(struct net_device *dev, void *addr, int alen, int newonly); | |
| extern int dev_mc_sync(struct net_device *to, struct net_device *from); | |
| extern void dev_mc_unsync(struct net_device *to, struct net_device *from); | |
| extern int __dev_addr_delete(struct dev_addr_list **list, int *count, void *addr, int alen, int all); | |
| extern int __dev_addr_add(struct dev_addr_list **list, int *count, void *addr, int alen, int newonly); | |
| extern int __dev_addr_sync(struct dev_addr_list **to, int *to_count, struct dev_addr_list **from, int *from_count); | |
| extern void __dev_addr_unsync(struct dev_addr_list **to, int *to_count, struct dev_addr_list **from, int *from_count); | |
| extern int dev_set_promiscuity(struct net_device *dev, int inc); | |
| extern int dev_set_allmulti(struct net_device *dev, int inc); | |
| extern void netdev_state_change(struct net_device *dev); | |
| extern void netdev_bonding_change(struct net_device *dev); | |
| extern void netdev_features_change(struct net_device *dev); | |
| /* Load a device via the kmod */ | |
| extern void dev_load(struct net *net, const char *name); | |
| extern void dev_mcast_init(void); | |
| extern const struct net_device_stats *dev_get_stats(struct net_device *dev); | |
| extern int netdev_max_backlog; | |
| extern int weight_p; | |
| extern int netdev_set_master(struct net_device *dev, struct net_device *master); | |
| extern int skb_checksum_help(struct sk_buff *skb); | |
| extern struct sk_buff *skb_gso_segment(struct sk_buff *skb, int features); | |
| #ifdef CONFIG_BUG | |
| extern void netdev_rx_csum_fault(struct net_device *dev); | |
| #else | |
| static inline void netdev_rx_csum_fault(struct net_device *dev) | |
| { | |
| } | |
| #endif | |
| /* rx skb timestamps */ | |
| extern void net_enable_timestamp(void); | |
| extern void net_disable_timestamp(void); | |
| #ifdef CONFIG_PROC_FS | |
| extern void *dev_seq_start(struct seq_file *seq, loff_t *pos); | |
| extern void *dev_seq_next(struct seq_file *seq, void *v, loff_t *pos); | |
| extern void dev_seq_stop(struct seq_file *seq, void *v); | |
| #endif | |
| extern int netdev_class_create_file(struct class_attribute *class_attr); | |
| extern void netdev_class_remove_file(struct class_attribute *class_attr); | |
| extern char *netdev_drivername(const struct net_device *dev, char *buffer, int len); | |
| extern void linkwatch_run_queue(void); | |
| unsigned long netdev_increment_features(unsigned long all, unsigned long one, | |
| unsigned long mask); | |
| unsigned long netdev_fix_features(unsigned long features, const char *name); | |
| static inline int net_gso_ok(int features, int gso_type) | |
| { | |
| int feature = gso_type << NETIF_F_GSO_SHIFT; | |
| return (features & feature) == feature; | |
| } | |
| static inline int skb_gso_ok(struct sk_buff *skb, int features) | |
| { | |
| return net_gso_ok(features, skb_shinfo(skb)->gso_type); | |
| } | |
| static inline int netif_needs_gso(struct net_device *dev, struct sk_buff *skb) | |
| { | |
| return skb_is_gso(skb) && | |
| (!skb_gso_ok(skb, dev->features) || | |
| (skb_shinfo(skb)->frag_list && | |
| !(dev->features & NETIF_F_FRAGLIST)) || | |
| unlikely(skb->ip_summed != CHECKSUM_PARTIAL)); | |
| } | |
| static inline void netif_set_gso_max_size(struct net_device *dev, | |
| unsigned int size) | |
| { | |
| dev->gso_max_size = size; | |
| } | |
| /* On bonding slaves other than the currently active slave, suppress | |
| * duplicates except for 802.3ad ETH_P_SLOW, alb non-mcast/bcast, and | |
| * ARP on active-backup slaves with arp_validate enabled. | |
| */ | |
| static inline int skb_bond_should_drop(struct sk_buff *skb) | |
| { | |
| struct net_device *dev = skb->dev; | |
| struct net_device *master = dev->master; | |
| if (master) { | |
| if (master->priv_flags & IFF_MASTER_ARPMON) | |
| dev->last_rx = jiffies; | |
| if (dev->priv_flags & IFF_SLAVE_INACTIVE) { | |
| if ((dev->priv_flags & IFF_SLAVE_NEEDARP) && | |
| skb->protocol == __cpu_to_be16(ETH_P_ARP)) | |
| return 0; | |
| if (master->priv_flags & IFF_MASTER_ALB) { | |
| if (skb->pkt_type != PACKET_BROADCAST && | |
| skb->pkt_type != PACKET_MULTICAST) | |
| return 0; | |
| } | |
| if (master->priv_flags & IFF_MASTER_8023AD && | |
| skb->protocol == __cpu_to_be16(ETH_P_SLOW)) | |
| return 0; | |
| return 1; | |
| } | |
| } | |
| return 0; | |
| } | |
| extern struct pernet_operations __net_initdata loopback_net_ops; | |
| #endif /* __KERNEL__ */ | |
| #endif /* _LINUX_DEV_H */ |